Michael Shellenberger is an American author, environmental policy expert, and cofounder of Breakthrough Institute. He was named a Time magazine Heroes of the Environment (2008), winner of the 2008 Green Book Award, co-editor of Love Your Monsters (2011) and co-author of Break Through (Houghton Mifflin 2007) and The Death of Environmentalism (2004). He and his co-author Ted Nordhaus have been described as "ecological modernists" and "eco-pragmatists." In 2015, Shellenberger joined with 18 other self-described ecomodernists to coauthor An Ecomodernist Manifesto.